Whatever you eat you need water. Crops cultivation is reducing available of peoples per capita water. The Food and Agriculture Organisation (FAO) has estimated that agriculture production will have to be increased 70% to feed the projected 9 billion people expected in the planet within 2050.
Water has a close relation with hunger and poverty. The countries in the world face water scarcity people are becoming poor and forced to migrate. If we see the coastal areas of Bangladesh salinity intrusion is a big problem. The people who were involved in agriculture losing their century old professions and migrating to big cities for searching better livelihoods.
So, water is important at every aspect and the question is how we can save water and effective use of agriculture? If we closely observe rain water that has an important impact to agriculture. Almost 85% of agricultural water comes from rain. It varies to the locations like over 95% in Sahel, about 90% in Latin America, about 60% in South Asia and 75% in North Africa.
World water forum at Istanbul experts talked about water sources those are identified into three categories: blue water for irrigation, green water from rain water harvesting for soil and plants and grey water that is polluted water could be treated and recycled.
Blue water is about technology that is pumped, stored, pipelined and distributed via a complex plumbing system which is hailed for green revolution at the uncertain climate condition. Grey water mostly polluted from unplanned urbanization and industrial development, but thanks waste water treatment technology can be a new source of safe water.
Green water from rain water harvesting is comparatively low-cost technology and convenient use of low-income people for water conservation. Let’s see a best practice of rain water harvesting at Kothapally is a rural community in Andhra Pradesh state in India. People had no water availability and forced to internal migration. Government asked to a development organisation, Icrisat which has water expertise, does something in the favor of local people and keep villagers in their land. The organisation explore low cost water conservation solutions to improve crop yields. People were formed watershed committee to care the dams and drainage gullies to divert run off water to ponds or wells. They also built and maintained bunds to stop soil erosion and set up women’s groups to produce vermicompost (composting with worms), which was sold to farmers to increase the organic content in the soil and improve the soil’s water retention capacity. The village of 270 families is now green and people live with happy and healthy. But the think is long term participatory practice can really work.
Bangladesh is a blessed country getting plenty of rain water almost 2000 mm annually. The country is a full of ponds, dighies, beels, canals, and rivers which store considerable amount of water. This precious water can be sources of washing, cooking, drinking, farming, bathing and running industries. But practically huge amount of rain water is becoming wastage and many rivers and canals dry up at monsoon time.
If we want Bangladesh green again, actually we have no time just thinking of water need actions how can we ensure proper use of rain water. Firstly, we need to aware people. Their participatory response to the use of resources like those water reservoirs can contain sufficient rain water. We know our rivers are drying because all upper riparian countries are diverting water stream from our rivers. We can build artificial dam but need to be careful about the height because of flood water.
At the household level we can catch rain water by roof top harvesting. Technology of roof top rain harvesting is low cost and locally available. As a small-scale piloting project of Hope for the Poorest, national NGO of Bangladesh collaborates with Simavi and Rain Foundation Netherlands based organisations for effective and efficient of rain water management at households’ level at coastal areas of Barguna and Satkhira districts.
The project is entrepreneurship approach that attracts community people who are interested to install rain harvesting system can get proper technical support from entrepreneurs. Entrepreneurs conduct demand session of rain water importance to the community people. Microcredit organization has rain credit products for entrepreneurs and households.
The project sustainability is entrepreneurs’ involvement who wants to create sustainable business. They earn profit from selling products and services to the customers and changing their livelihoods. Community people who are customers getting support from entrepreneurs at their door step.
Finally, we can say the sky is no limit and the nature is an important source of sweet water. So, let’s start to preserve the natural water by the ways already I have discussed and make sure our need of water without mercy of other countries.